[PATCH] usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()

[Tang Bin]

dev_pm_domain_attach_by_name() may return NULL in some cases,
so IS_ERR() doesn't meet the requirements. Thus fix it.

Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Signed-off-by: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/gadget/udc/tegra-xudc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
index d9c406bdb..c25765628 100644
--- a/drivers/usb/gadget/udc/tegra-xudc.c
+++ b/drivers/usb/gadget/udc/tegra-xudc.c
@@ -3691,15 +3691,15 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc)
 	int err;
 
 	xudc->genpd_dev_device = dev_pm_domain_attach_by_name(dev, "dev");
-	if (IS_ERR(xudc->genpd_dev_device)) {
-		err = PTR_ERR(xudc->genpd_dev_device);
+	if (IS_ERR_OR_NULL(xudc->genpd_dev_device)) {
+		err = PTR_ERR(xudc->genpd_dev_device) ? : -ENODATA;
 		dev_err(dev, "failed to get device power domain: %d\n", err);
 		return err;
 	}
 
 	xudc->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "ss");
-	if (IS_ERR(xudc->genpd_dev_ss)) {
-		err = PTR_ERR(xudc->genpd_dev_ss);
+	if (IS_ERR_OR_NULL(xudc->genpd_dev_ss)) {
+		err = PTR_ERR(xudc->genpd_dev_ss) ? : -ENODATA;
 		dev_err(dev, "failed to get SuperSpeed power domain: %d\n", err);
 		return err;
 	}
-- 
2.20.1.windows.1